Doom Scroll (or Hope Quest) through your feed on your favorite social media platform. Let yourself get into the zone and when you are pulled out by a particularly good ad or image, take a second and note what did it. Was it something about the color, shapes, a slightly 'off' image?
Ideally filter down to ones that are about books and try to find 3. Note what it was about the image that made you stop, how it made you feel, and whether it enticed you to click.